Maryland, 1997

Damaging Winds in Maryland, July 18, 1997

July 18, 1997 · NWS LWX · 3 events in 3 counties and zones

A rapidly developing squall line produced scattered severe weather as it moved from the northern suburbs of Washington, DC through lower southern Maryland. In Bethesda, large limbs were knocked down.

Where it happened

Every event with a place to put it. Tap one for its entry below.

  • Tornadoes
  • Tropical storms and surge
  • Floods
  • Wind
  • Hail
  • Winter weather
  • Heat and drought
  • Cold
  • Fire, smoke and dust
  • Marine and coastal
  • Other

Open the live radar over this ground

The toll

Deaths
0
Injuries
0
Property damage
$28,000
Crop damage
None recorded
Events
3

Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.

What happened

The episode as NWS LWX wrote it up.

A rapidly developing squall line produced scattered severe weather as it moved from the northern suburbs of Washington, DC through lower southern Maryland. In Bethesda, large limbs were knocked down. Numerous large limbs and some trees fell in Prince George's Co, namely in College Park, Riverdale, and Silver Hill. Other damage occurred between Bowie and Brandywine, including several snapped tree tops. Property damage was minimal, including minor roof damage from fallen limbs.In Waldorf, a wind gust of 71 mph was reported. An observer in White Plains (Charles Co) recorded a 61 mph gust. In the District of Columbia and immediate Maryland suburbs, 20,000 customers were without power during the height of the storm. In Anne Arundel Co, at least 8 large limbs fell onto roads and into yards, but no direct property damage was reported. In all, 25,000 Baltimore Gas and Electric customers lost power during the storm; 18,000 of those were in Anne Arundel Co.

The radar

The national radar mosaic for the moment the first event began.

Open the radar archive at this moment

Event by event

3 thunderstorm wind. Local standard time, as filed.

Thunderstorm Wind, Montgomery

When
July 18, 6:45 PM EST
Where
Montgomery County, Bethesda
Property damage
$5,000
Coordinates
38.970, -77.120

Thunderstorm Wind, Prince George'S

When
July 18, 7:00 PM EST
Where
Prince George'S County, College Park to Brandywine
Measured
53 kt (61 mph)
Property damage
$20,000
Coordinates
38.980, -76.950

Thunderstorm Wind, Charles

When
July 18, 7:25 PM EST
Where
Charles County, Waldorf
Measured
61 kt (70 mph)
Property damage
$3,000
Coordinates
38.630, -76.920

What these are

Thunderstorm Wind
Winds from a thunderstorm of 50 knots (58 mph) or more, or lower winds that caused damage or casualties. Measured gusts are marked MG, estimated EG.

After NWS Directive 10-1605, the rules offices file Storm Data by.

The same day elsewhere

More

Every storm in Maryland in 1997Every state in 1997This day in weather historyWarnings in Maryland, July 1997

Sources

NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 5611201, 5611202, 5611203.